Thomas Shea-USA TODAY Sports

The Houston Roughnecks blew a nine-point lead in the final 1:07 of the fourth quarter, then scored in overtime to beat the host San Antonio Brahmas 17-15 on Sunday to clinch a berth in the XFL playoffs.

The Roughnecks (5-3) scored the only conversion in overtime -- in which teams alternate attempts to reach the end zone from their opponent's 5-yard line -- when Cole McDonald connected with Deontay Burnett on a quick slant for two points.

Houston led 15-6 in the third quarter on quarterback Brandon Silvers' second touchdown pass, a 5-yarder to Garrett Owens.

San Antonio (2-6) rallied with nine fourth-quarter points on Jacques Patrick's 2-yard touchdown run with 1:07 left, and John Parker Romo's 49-yard field goal with seven seconds remaining in regulation. Romo also made kicks of 26 and 42 yards. Patrick finished with 96 yards on 16 carries.

Silvers completed 17 of 36 passes for 146 yards, two touchdowns and two interceptions. San Antonio's Jack Coan was 23 of 41 for 190 yards, no TDs and two interceptions.

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